Network · AS6871

AS6871 British Telecommunications PLC

AS6871 (British Telecommunications PLC) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS6871

OwnerBritish Telecommunications PLC
KindInternet service provider
Servers, not peopleno
IPv4 addresses2,097,664
IPv4 ranges53
IPv6 ranges2

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

87.112.0.0/14
31.108.0.0/14
84.92.0.0/15
51.6.0.0/15
146.198.0.0/15
91.125.0.0/16
80.229.0.0/16
80.189.0.0/16
51.9.0.0/16
46.208.0.0/16
31.125.0.0/16
213.31.0.0/16

Ranges and owner from DB-IP (CC BY 4.0), updated 2026-10-21.

Check an IP address →

Detect it in code

Spot AS6871 traffic at signup.

Send the visitor's IP. The response includes the ASN, the owner and flags.hosting.

curl https://veqen-app.com/v1/ip/check \
  -H "Authorization: Bearer $VEQEN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"ip": "203.0.113.7"}'

import os, requests

r = requests.post(
    "https://veqen-app.com/v1/ip/check",
    headers={"Authorization": f"Bearer {os.environ['VEQEN_API_KEY']}"},
    json={"ip": "203.0.113.7"},
    timeout=10,
)
result = r.json()
print(result["risk"]["verdict"], result["risk"]["reasons"])

const res = await fetch("https://veqen-app.com/v1/ip/check", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.VEQEN_API_KEY}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({"ip": "203.0.113.7"}),
});
const result = await res.json();
console.log(result.risk.verdict, result.risk.reasons);

Questions

About AS6871

Is AS6871 a datacenter or VPN network?

AS6871 (British Telecommunications PLC) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS6871?

AS6871 is registered to British Telecommunications PLC. It announces about 2,097,664 IPv4 addresses.

How do I detect traffic from AS6871?

Call the Veqen IP check with the visitor's address. The response includes the ASN, the owner and whether the network is a datacenter, VPN network, relay or ISP.